Battery housing for a mobile phone



FIG. 1 is a front perspective view from below and one side of a battery housing for a mobile phone showing my new design;

FIG. 2 is a side view;

FIG. 3 is a rear view;

FIG. 4 is a top plan view;

FIG. 5 is a bottom plan view;

FIG. 6 is a rear perspective view from below and other side; and,

FIG. 7 is a front view. 

The ornamental design for a "battery housing for a mobile phone", as shown and described. 